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Minor earthquake, 2.89 mag strikes near Whitehall in Montana


Earthquake location 45.765S, -111.8951667WA minor earthquake with magnitude 2.89 (ml/mb) was detected on Friday, 19 kilometers (12 miles) from Whitehall in Montana. The 2.89-magnitude earthquake has occurred at 12:46:36 / 12:46 pm (local time epicenter). All ids that are associated to the event: mb80286904. Unique identifier: mb80286904. Exact time and date of earthquake 23/03/18 / 2018-03-23 19:46:36 / March 23, 2018 @ 7:46 pm UTC/GMT. The epicenter of the earthquake was roughly 5 km (3 miles) below the earth’s surface. Exact location of event, depth 5 km, -111.8951667° West, 45.765° North.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Bozeman, Butte-Silver Bow (Balance), Butte. Epicenter of the event was 67 km (42 miles) from Bozeman (c. 37 300 pop), 56 km (35 miles) from Butte (c. 34 200 pop), 61 km (38 miles) from Butte-Silver Bow (Balance) (c. 33 500 pop), 56 km (35 miles) from Belgrade (c. 7 400 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been 0, in the last 10 days 0, in the past 30 days 0 and in the last 365 days four earthquakes of magnitude 3.0 or greater that have been detected nearby. There are an estimated 1,300,000 minor quakes in the world each year.

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 19 km SE of Whitehall, Montana.

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More information

Parameter Value Description
Magnitude 2.89 mb The magnitude for the event.
Longitude -111.8951667° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 45.765° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 5 km Depth of the event in kilometers.
Place 19km SE of Whitehall, Montana Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-03-23 19:46:36 Time when the event occurred. UTC/GMT
Updated 2018-03-23 19:57:29 Time when the event was most recently updated. UTC/GMT
Timezone offset -420 Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 128 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network mb The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,mb, A comma-separated list of network contributors.
Number of Stations Used 10 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.074 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.18 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 83 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID mb80286904 Id of event.
Event Code 80286904 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,mb80286904, A comma-separated list of event ids that are associated to an event.

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